How to connect to SFTP server using RSA key file?

Question

linux

Set up an SFTP server. With a password connection, everything works fine, but you need to connect only with an ssh key in order to disable password authentication on the server. How to implement it? setting was on this article.

I tried to create keys and, as it should be in the work of ssh, I threw the public one on the server, and kept the private one, but the authentication does not work - FileZilla issues the following logs:

Status: Connecting to (IP-adress):port...
Status: Using username "username". Error: FATAL ERROR: No supported authentication methods available (server sent :
publickey)

What needs to be done to connect only by key?

Answer 1

How did you create the keys? Probably in putty-gen ?
If the answer is yes, change the key.
https://askubuntu.com/questions/204400/ssh-public-...